Sauna exterior



FIG. 1 is a top left side exterior perspective view of the sauna of the present invention;

FIG. 2 is a cut away left side interior perspective view thereof, taken from line 2-2 in FIG. 1;

FIG. 3 is a front exterior elevation view thereof;

FIG. 4 is a left side exterior elevation view thereof; and,

FIG. 5 is a bottom plan exterior view thereof.

The broken lines shown in the drawings are directed to environment, are for informational purposes only, and form no part of the claimed design. 

The ornamental design for a sauna exterior, as shown and described. 